package chapter02;

import java.util.Scanner;

public class Example09 {
    public static void main(String[] args){
//        int grade=75;
        Scanner scl=new Scanner(System.in);
        int grade=scl.nextInt();
        if(grade>80){
            System.out.println("该成绩的等级为优");
        }else if(grade>70){
            System.out.println("该成绩的等级为良");
        }else if (grade>60){
            System.out.println("该成绩的等级为中");
        }else{
            System.out.println("该成绩的等级为差");
        }
    }
}
